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Qi, To add to what Jochen wrote, the zones in your Type56 model do not have to have any direct thermal contact with each other. If you were to create a zone for the platform, a zone for the concourse and a zone for the entrance but have no ADJACENT walls in the model then there is no direct thermal contact between the parts of the building. In order to simulate the indirect contact (contact through the soil) you need to implement BOUNDARY walls in each of the three sections of your model these BOUNDARY walls will be in direct thermal contact with a soil model. For the soil model I would recommend that you start off simply assuming that the soil is a known temperature that is not affected by what happens in the metro. This will get the model running and allow you to test it. Once you have the building and its thermal zones set up then you can implement the Type1267 (Tess Ground Coupling - http://trnsys.com/tess-libraries/individual-components.php) in order to model the dynamic impact of the soil. Kind regards, David On 11/19/2013 02:57, Cheng Qi wrote:
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |